class MyWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.resize(1300, 700)
self.setFixedSize(self.size())
self.setWindowTitle('PyChord')
self.add_combo_boxes()
self.add_buttons()
self.sl = QSlider(Qt.Horizontal, self)
self.volume = QLCDNumber(self)
self.add_slider()
self.actual_key = None
self.actual_meter = 4
self.actual_instrument = instrument.Piano()
self.melody_stream = stream.Stream()
self.harmonized_melody_stream = stream.Stream()
self.reset_stream(self.melody_stream)
self.reset_stream(self.harmonized_melody_stream)
mixer.init(44100, -16, 2, 1024)
self.tmpStream = stream.Stream()
self.tmpStream.insert(instrument.Piano())
self.lpc = lily.translate.LilypondConverter()
self.lpc.context = lily.lilyObjects.LyMusicList()
self.keyboard = Keyboard(self)
self.melody = Melody(self, self.actual_key)
def change_volume(self, vl):
mixer.music.set_volume(vl / 100.0)
self.volume.display(vl)
def add_buttons(self):
play_button = QPushButton('Play', self)
play_button.move(1100, 300)
play_button.clicked.connect(self.play_notes)
reset_button = QPushButton('Reset', self)
reset_button.move(1100, 350)
reset_button.clicked.connect(self.reset)
notes_button = QPushButton('Show Notes', self)
notes_button.clicked.connect(self.show_notes)
notes_button.move(1100, 400)
save_button = QPushButton('Save', self)
save_button.clicked.connect(self.save)
save_button.move(1100, 450)
def add_combo_boxes(self):
key_info = QLabel('Choose a key:', self)
key_info.move(600, 50)
key_choice = QComboBox(self)
key_choice.move(600, 100)
key_choice.addItems(['None', 'C', 'D', 'E', 'F', 'G', 'A', 'B'])
key_choice.currentIndexChanged.connect(self.change_key)
meter_info = QLabel('Choose a meter:', self)
meter_info.move(400, 50)
meter_choice = QComboBox(self)
meter_choice.move(400, 100)
meter_choice.addItems(['4/4', '3/4', '2/4'])
meter_choice.currentIndexChanged.connect(self.change_meter)
instrument_choice = QComboBox(self)
instrument_choice.move(1100, 250)
instrument_choice.addItems(
['Piano(default)', 'Guitar', 'Violin', 'Flute', 'Mandolin'])
instrument_choice.currentIndexChanged.connect(self.change_instrument)
def add_slider(self):
self.sl.setMinimum(0)
self.sl.setMaximum(100)
self.sl.setValue(80)
self.sl.setTickInterval(1)
self.sl.move(1100, 220)
self.sl.valueChanged.connect(
lambda: self.change_volume(self.sl.value()))
self.volume.move(1100, 180)
self.volume.display(80)
def play_notes(self):
try:
if not self.melody.is_well_rhythmic:
confirm = QMessageBox()
confirm.setWindowTitle('Error')
confirm.setText('The rhythm is not correct.')
confirm.setIcon(QMessageBox.Information)
confirm.exec()
else:
if self.actual_key is not None:
self.melody.harmonize()
mixer.music.load(
self.harmonized_melody_stream.write('midi'))
mixer.music.play()
else:
mixer.music.load(self.melody_stream.write('midi'))
mixer.music.play()
except exceptions21.StreamException:
pass
def show_notes(self):
if not self.melody.is_well_rhythmic:
confirm = QMessageBox()
confirm.setWindowTitle('Error')
confirm.setText('The rhythm is not correct.')
confirm.setIcon(QMessageBox.Information)
confirm.exec()
else:
self.lpc.context.contents = []
self.lpc.appendObjectsToContextFromStream(self.melody_stream)
with open('notes.ly', 'w+') as f:
f.write('\\version "2.20.0"\n')
if self.actual_key is None:
f.write("{\n")
f.write('\\key c \\major \n')
f.write(str(self.lpc.context))
f.write("}\n")
else:
f.write('{<<\n')
f.write('\\chords {')
for i in self.melody.list_of_chords:
f.write(i.lower() + " ")
f.write('}\n')
f.write('{\\key ' + self.actual_key.tonic.name.lower() +
' \\' + self.actual_key.mode)
f.write('\n')
f.write(str(self.lpc.context))
f.write('}>>}\n')
if platform.system() == 'Linux':
process = subprocess.Popen(['lilypond notes.ly'], shell=True)
process.wait(100)
subprocess.Popen(['chmod 755 notes.pdf'], shell=True)
subprocess.Popen(['xdg-open notes.pdf'], shell=True)
elif platform.system() == 'Windows':
process = subprocess.Popen(['powershell', 'lilypond notes.ly'])
process.wait(100)
subprocess.Popen(['powershell', '.\\notes.pdf'])
def save(self):
if not self.melody.is_well_rhythmic:
confirm = QMessageBox()
confirm.setWindowTitle('Error')
confirm.setText('The rhythm is not correct.')
confirm.setIcon(QMessageBox.Information)
confirm.exec()
else:
if not os.path.exists('music'):
os.makedirs('music')
today = date.today()
flag = True
count = 1
path = ''
while flag is True:
path = os.path.join('music',
'{}.{}.mid'.format(str(count), str(today)))
flag = os.path.isfile(path)
count += 1
self.harmonized_melody_stream.write('midi', fp=path)
confirm = QMessageBox()
confirm.setWindowTitle('Confirmation')
confirm.setText('File saved')
confirm.setIcon(QMessageBox.Information)
confirm.exec()
def add_note(self, my_note):
self.melody.rhythmic_values_sum = sum(
self.melody.note_buttons[i].rhythmic_value
for i in range(len(self.melody.note_buttons)))
if self.melody.rhythmic_values_sum < self.melody.max_notes:
self.melody_stream.insert(self.melody.rhythmic_values_sum + 2,
note.Note(my_note.nameWithOctave))
for i in range(8):
if mixer.Channel(i).get_busy():
pass
else:
if platform.system() == 'Linux':
mixer.Channel(i).play(
mixer.Sound('notes/{}.wav'.format(my_note)))
elif platform.system() == 'Windows':
mixer.Channel(i).play(
mixer.Sound('notes\\{}.wav'.format(my_note)))
break
self.melody.add_note_to_melody(my_note)
self.melody.show_melody()
def reset_stream(self, stream_to_reset):
stream_to_reset.clear()
stream_to_reset.insert(0, self.actual_instrument)
stream_to_reset.insert(
1, meter.TimeSignature('{}/4'.format(self.actual_meter)))
def change_instrument(self, choice):
instruments = [
instrument.Piano(),
instrument.AcousticGuitar(),
instrument.Violin(),
instrument.Flute(),
instrument.Mandolin()
]
self.actual_instrument = instruments[choice]
self.melody_stream[0] = self.actual_instrument
def reset(self):
for button in self.melody.note_buttons:
button.hide()
self.melody.note_buttons.clear()
self.melody.notes_counter = 0
self.melody.rhythmic_values_sum = 0
self.reset_stream(self.melody_stream)
self.reset_stream(self.harmonized_melody_stream)
def change_key(self, choice):
self.reset()
self.keyboard.reset()
if choice == 0:
self.actual_key = None
else:
keys = ['None', 'C', 'D', 'E', 'F', 'G', 'A', 'B']
self.actual_key = key.Key(keys[choice])
self.keyboard.on_key_change(self.actual_key)
self.melody.actual_key = self.actual_key
def change_meter(self, choice):
self.reset()
meters = [4, 3, 2]
self.actual_meter = meters[choice]
self.melody.on_meter_change(self.actual_meter)
self.update(0, 0, 1000, 1000)
def paintEvent(self, e):
lines = QPainter(self)
lines.setPen(QPen(QColor(240, 240, 240), 10, Qt.SolidLine))
for i in range(17):
lines.drawLine(250 + i * 45, 290, 250 + i * 45, 350)
lines.setPen(QPen(Qt.black, 10, Qt.SolidLine))
for i in range(5):
lines.drawLine(250 + i * self.actual_meter * 45, 290,
250 + i * self.actual_meter * 45, 350)
lines.end()
